Dual-mode combustor based on metal powder fuel and water surface and underwater navigation body power system

Abstract

The invention discloses a bimodal burner of metal powder fuel and a water surface underwater vehicle power system. According to the bimodal vehicle, a fuel supply system is shared, and according to different navigation states, powder flow output is controlled by adjusting a powder flow adjusting valve, so that the self-adaptive flow matching and burning technology is achieved. A condensed phase product (such as aluminum oxide) can be directly recycled and can be subsequently used as a raw material of a ceramic / refractory material; and the gas-phase product hydrogen is pressurized and recycled by the gas collecting cavity and then reinjected into the combustion chamber for afterburning, so that the energy utilization efficiency of the whole power system is improved. The internal structure of the combustion chamber is convenient, daily maintenance and cleaning of a combustion chamber injection part are facilitated, and the combustion chamber is suitable for industrial large-scale use and popularization.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of burners, and particularly relates to a dual-mode burner based on metal powder fuel and a water surface and underwater vehicle power system. BACKGROUND

[0002] The power system of a water surface and underwater vehicle (such as an unmanned boat, a submarine, a submersible) needs to adapt to the water-air dual-medium switching scene. The traditional solution has significant limitations, such as the water surface mode relying on a fuel / gas turbine or an internal combustion engine, needing air for combustion, and being unable to work underwater; the water surface mode mainly using a storage battery or a closed cycle engine (such as a Stirling engine), having low energy density (lithium battery only.~.MJ / kg), short endurance, and being dependent on pre-stored oxygen or having an exposure risk of an air pipe; in a dual-purpose mode system, existing solutions mostly use electric hybrid propulsion (diesel engine + battery), but have problems such as energy conversion loss, system complexity, and pollution emission.

[0003] Metal powder fuel (such as aluminum and magnesium powder) becomes an ideal alternative fuel because of its high volumetric energy density (aluminum:.MJ / kg, far higher than. MJ / kg of gasoline) and renewable characteristics. The combustion product aluminum oxide can be recycled, and hydrogen can be recycled for combustion, which meets the green energy trend.

[0004] In an underwater power system, an aluminum / water burner has been researched (such as aluminum / water reaction hydrogen production propulsion), but the burner has problems such as difficult ignition, uncontrollable reaction rate, and condensate product blockage. In a water surface power system, a metal powder / air burner needs a complex air (oxygen) supply system, and the burner cannot be directly used underwater. Related technologies have the following technical characteristics: lack of a combustion system that can adapt to water / air environment switching, and the recycling of combustion products is not realized.

[0005] In the field of metal fuel power technology, for an air combustion system, there is a metal powder injection air combustion propeller, but it is only used in the atmospheric environment; for a water propulsion system, there is a magnesium / aluminum powder and water reaction to produce hydrogen to drive a turbine, but it is only used in the underwater mode and cannot be used for water surface navigation; for product utilization technology, there are aluminum oxide capture and hydrogen backfill combustion, but they are not integrated with a multi-mode burner.

[0006] In the field of water area dual-mode power system, the conventional dual-fuel system (such as diesel + battery) causes equipment redundancy and weight increase. The existing technical problems mainly include mode fragmentation, i.e. the existing system cannot realize seamless switching of water area dual-mode in a single burner; product non-circulation, i.e. hydrogen is directly discharged without being injected back into the combustion chamber for secondary heat release; and combustion efficiency limitation, i.e. the combustion chamber structure is not optimized for water area dual-mode two-phase flow, and the reaction efficiency is not high. In summary, the existing water surface and underwater power system has poor adaptability and causes pollution emission. SUMMARY

[0007] The present application aims to provide a dual-mode burner based on metal powder fuel and a water surface and underwater vehicle power system to solve the problem of poor adaptability of the existing water surface and underwater power system and pollution emission.

[0008] To solve the above technical problems, the present application adopts the following technical solutions:

[0009] A dual-mode burner based on metal powder fuel and a water surface and underwater vehicle power system, comprising a powder fuel supply system, a water area dual-mode combustion chamber system, an air inlet and storage system, and an underwater water supply cooling system.

[0010] The powder fuel supply system comprises a powder fuel storage tank, which contains metal powder fuel inside; the upper part of the powder fuel storage tank is provided with a feeding bin and a squeeze gas tank, the output end of the squeeze gas tank is connected to the inside of the powder fuel storage tank through a fluidization gas pipeline; and the bottom of the powder fuel storage tank is provided with a discharge pipeline.

[0011] The water area dual-mode combustion chamber system comprises a combustion cavity, which is provided with a gas outlet; the combustion cavity is divided into two cavities, i.e. a combustion chamber and a gas collection chamber; the discharge pipeline is connected to the combustion chamber; the combustion chamber is further provided with a gas outlet pipeline, one end of which is sealed and extends out of the combustion cavity and is connected to the input end of the squeeze gas tank.

[0012] The air inlet and storage system comprises an air compressor, the first output end of which is connected to the gas collection chamber through an air outlet pipeline, and the second output end of which is connected to the input end of the squeeze gas tank through a gas storage pipeline.

[0013] The underwater water supply cooling system comprises a water pump, and a hollow cooling cavity is formed in the shell of the combustion cavity, and the output pipeline of the water pump is sealed into the cooling cavity.

[0014] The present application also has the following features:

[0015] Further, the water area dual-mode combustion chamber system further comprises a plasma igniter and a hydrogen gas storage tank.

[0016] The ignition head of the plasma igniter is sealed into the interior of the combustion chamber;

[0017] The interior of the hydrogen storage tank is provided with a driving piston, the driving piston divides the interior of the hydrogen storage tank into a storage cavity and a driving cavity; the storage cavity is in communication with one end of the air inlet pipeline, and the other end of the air inlet pipeline is sealed into the interior of the combustion chamber; the driving cavity is in communication with one end of the hydrogen storage tank extrusion gas pipeline and one end of the exhaust pipeline respectively, and the other end of the hydrogen storage tank extrusion gas pipeline is connected with the output end of the extrusion gas tank.

[0018] Further, an adjusting valve is arranged on the discharge pipeline.

[0019] Further, the adjusting valve is a needle valve adjusting valve, and the adjusting valve is connected with a stepping motor.

[0020] Further, the water area dual-mode combustion chamber system further comprises a liquid-phase water injector, an output end of the liquid-phase water injector is located in the interior of the combustion chamber, and an input end of the liquid-phase water injector is located in the interior of the cooling cavity.

[0021] Further, one end of the discharge pipeline located in the interior of the combustion chamber is connected with a powder flame stabilizer.

[0022] Further, the metal powder fuel is aluminum powder fuel or magnesium powder fuel.

[0023] Further, a gas flow adjusting valve is arranged on the fluidization gas pipeline.

[0024] Further, a stop valve is arranged on the air outlet pipeline.

[0025] Compared with the prior art, the present application has the following technical effects:

[0026] The metal powder fuel dual-mode combustor and the water area dual-mode vehicle of the water surface and underwater vehicle power system adopt a common fuel supply system, according to different navigation states, the output of the powder flow is controlled by adjusting the powder flow adjusting valve, so as to realize the adaptive flow matching and combustion technology. The condensed phase product (such as aluminum oxide) can be directly recycled, and can be used as raw materials for ceramic / refractory materials in the future; the gas phase product hydrogen is pressurized and recycled through the gas collection cavity and then injected into the combustion chamber for afterburning, so as to improve the energy utilization efficiency of the whole power system. The internal structure of the combustion chamber is convenient, and the daily maintenance and cleaning of the injection parts of the combustion chamber are convenient, and it is suitable for large-scale use and promotion in industry. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the overall structure schematic diagram of the metal powder fuel dual-mode combustor and the water area dual-mode vehicle of the water surface and underwater vehicle power system.

[0028] Figure 2 is the structural schematic diagram of the powder fuel supply system in the application;

[0029] Figure 3 is the structural schematic diagram of the underwater water supply cooling system in the application;

[0030] Figure 4 is the structural schematic diagram of the air intake gas storage system in the application;

[0031] Figure 5 is the structural schematic diagram of the water area dual-mode combustion chamber system in the application.

[0032] The meanings of the respective numbers in the drawings are as follows:

[0033] 1, powder fuel tank; 2, feeding bin; 3, extrusion gas tank; 4, fluidization gas pipeline; 5, discharging pipeline; 6, combustion cavity; 7, fuel gas outlet; 8, combustion chamber; 9, gas collecting chamber; 10, gas outlet pipeline; 11, air compressor; 12, outlet pipeline; 13, gas storage pipeline; 14, water pump; 15, cooling cavity; 16, output pipeline; 17, plasma igniter; 18, hydrogen gas storage tank; 19, ignition head; 20, driving piston; 21, gas storage cavity; 22, driving cavity; 23, air intake pipeline; 24, hydrogen gas storage tank extrusion gas pipeline; 25, exhaust pipeline; 26, regulating valve; 27, liquid-phase water injector; 28, powder flame stabilizer; 29, stepping motor; 30, gas flow regulating valve; 31, stop valve. DETAILED DESCRIPTION

[0034] It should be noted that all the components in the application, if not specially stated, are all known components in the prior art. For example, the water pump is a commonly known water pump.

[0035] The following gives specific embodiments of the application, and it should be noted that the application is not limited to the following specific embodiments, and any equivalent transformation made on the basis of the technical solutions of the application falls within the protection scope of the application.

[0036] As shown in Figures 1-5 , a dual-mode combustor based on metal powder fuel and a water surface and underwater vehicle power system, comprising a powder fuel supply system, a water area dual-mode combustion chamber system, an air intake gas storage system and an underwater water supply cooling system;

[0037] The powder fuel supply system comprises a powder fuel tank 1, and the powder fuel tank 1 internally contains metal powder fuel; the upper part of the powder fuel tank 1 is provided with a feeding bin 2 and an extrusion gas tank 3, and the output end of the extrusion gas tank 3 is communicated with the inside of the powder fuel tank 1 through a fluidization gas pipeline 4; the bottom of the powder fuel tank 1 is provided with a discharging pipeline 5;

[0038] The water area dual-mode combustion chamber system comprises a combustion cavity 6, a gas outlet 7 is arranged on the combustion cavity 6; the combustion cavity 6 is internally divided into two cavities, which are a combustion chamber 8 and a gas collecting chamber 9 respectively; a discharging pipeline 5 is connected to the combustion chamber 8; the combustion chamber 8 is further provided with a gas outlet pipeline 10, one end of the gas outlet pipeline 10 is sealed and extends out of the combustion cavity 6 and is connected with an input end of the extrusion gas tank 3;

[0039] The air inlet and gas storage system comprises a compressor 11, a first output end of the compressor 11 is connected with the gas collecting chamber 9 through an air outlet pipeline 12, and a second output end of the compressor 11 is connected with the input end of the extrusion gas tank 3 through a gas storage pipeline 13;

[0040] The underwater water supply cooling system comprises a water pump 14, a hollow cooling cavity 15 is arranged in the outer wall of the combustion cavity 6, and an output pipeline 16 of the water pump 14 is sealed into the cooling cavity 15.

[0041] The metal powder fuel-based dual-mode combustor and the surface and underwater vehicle power system of the embodiment mainly comprise four components, i.e., a powder fuel supply system, a water area dual-mode combustion chamber system, an air inlet and gas storage system and an underwater water supply cooling system.

[0042] The powder fuel supply system realizes stable, reliable and flow-regulated supply of the powder fuel;

[0043] The air inlet and gas storage system realizes the functions of capturing oxidant air into the combustion chamber to participate in combustion and storing the excess air into the extrusion gas tank;

[0044] The underwater water supply cooling system realizes the functions of capturing oxidant water into the combustion chamber to participate in combustion and cooling and protecting the combustion chamber shell by the excess liquid water;

[0045] The water area dual-mode combustion chamber system realizes the function of generating high-temperature gas by the metal fuel / air or metal fuel / water combustion reaction.

[0046] As a preferred solution, the discharging pipeline 5 is provided with an adjusting valve 26.

[0047] Further preferably, the adjusting valve 26 is a needle adjusting valve, and the adjusting valve 26 is connected with a stepping motor 29.

[0048] The powder fuel supply system is as shown in Figure 2 The powder fuel is added to the powder fuel storage tank 1, the stepping motor 29 controls the opening degree of the needle adjusting valve according to the fuel flow demand, then the gas flow adjusting valve is opened, so that the air in the extrusion gas tank 3 passes through the fluidization gas pipeline 4 and the powder fuel enters the combustion chamber 8 under the action of the fluidization gas.

[0049] The surface air inlet and gas storage system is as shown in Figure 4As shown, in the underwater working mode, the water pump 14 is opened to suck liquid water in the environment, part of which is atomized by the liquid water injector 27 to realize subsequent efficient combustion. Another part of the water enters the cooling cavity 15 to cool the high-temperature combustion chamber shell and protect the shell.

[0050] The air outlet pipeline 12 is provided with a stop valve 31. The fluidized gas pipeline 4 is provided with a gas flow regulating valve 30.

[0051] As a preferred solution, the water area dual-mode combustion chamber system further comprises a plasma igniter 17 and a hydrogen gas storage tank 18.

[0052] The ignition head 19 of the plasma igniter 17 is sealingly entered into the inside of the combustion chamber 8.

[0053] The hydrogen gas storage tank 18 is provided with a driving piston 20, which divides the hydrogen gas storage tank 18 into a gas storage cavity 21 and a driving cavity 22. The gas storage cavity 21 is in communication with one end of the air inlet pipeline 23, and the other end of the air inlet pipeline 23 is sealingly entered into the inside of the combustion chamber 8. The driving cavity 22 is in communication with one end of the hydrogen gas storage tank extrusion gas pipeline 24 and one end of the exhaust pipeline 25, respectively. The other end of the hydrogen gas storage tank extrusion gas pipeline 24 is connected with the output end of the extrusion gas tank 3.

[0054] The water surface air inlet and gas storage system is as shown in Figure 3 As shown, the air in the environment enters the air compressor 11 to form high-pressure air. Opening the stop valve 31 makes part of the high-pressure air enter the gas collecting chamber 9 through the air outlet pipeline, and then injects into the combustion chamber 8 to participate in the subsequent combustion reaction. Another part of the high-pressure air enters the extrusion gas tank 3 to maintain its pressure sufficient.

[0055] As a preferred solution, the water area dual-mode combustion chamber system further comprises a liquid water injector 27, the output end of which is located in the inside of the combustion chamber 8, and the input end of which is located in the inside of the cooling cavity 15.

[0056] As a preferred solution, the outlet pipeline 5 is connected with a powder flame stabilizer 28 at one end located in the inside of the combustion chamber 8.

[0057] Specifically, the metal powder fuel is aluminum powder fuel or magnesium powder fuel.

Claims

1. A dual-mode burner based on metal powder fuel and a propulsion system for surface and underwater vehicles, characterized in that, This includes a powder fuel supply system, a dual-mode combustion chamber system in water, an air intake and storage system, and an underwater water supply and cooling system; The powder fuel supply system includes a powder fuel storage tank (1), which contains metal powder fuel; a feeding bin (2) and an extrusion gas tank (3) are provided on the upper part of the powder fuel storage tank (1), and the output end of the extrusion gas tank (3) is connected to the inside of the powder fuel storage tank (1) through a fluidizing gas pipe (4); a discharge pipe (5) is provided at the bottom of the powder fuel storage tank (1). The aforementioned water-based dual-mode combustion chamber system includes a combustion chamber (6), on which a gas outlet (7) is provided; the combustion chamber (6) is divided into two chambers, namely a combustion chamber (8) and a gas collection chamber (9); the discharge pipe (5) is connected to the combustion chamber (8); the combustion chamber (8) is also provided with a gas outlet pipe (10), one end of which is sealed and extends out of the combustion chamber (6) and connected to the input end of the compressed gas tank (3); The air intake and storage system includes a compressor (11), the first output end of the compressor (11) is connected to the air collection chamber (9) through an air outlet pipe (12), and the second output end of the compressor (11) is connected to the input end of the compressed air tank (3) through an air storage pipe (13). The underwater water supply cooling system includes a water pump (14), and a hollow cooling cavity (15) is provided inside the shell of the combustion chamber (6). The output pipe (16) of the water pump (14) is sealed and enters the cooling cavity (15).

2. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in claim 1, characterized in that, The aforementioned water-based dual-mode combustion chamber system also includes a plasma igniter (17) and a hydrogen storage tank (18); The ignition head (19) of the plasma igniter (17) is sealed and enters the combustion chamber (8); The hydrogen storage tank (18) is equipped with a driving piston (20), which divides the interior of the hydrogen storage tank (18) into a storage chamber (21) and a driving chamber (22). The storage chamber (21) is connected to one end of the intake pipe (23), and the other end of the intake pipe (23) is sealed and enters the combustion chamber (8). The driving chamber (22) is connected to one end of the hydrogen storage tank extrusion gas pipeline (24) and one end of the exhaust pipe (25), and the other end of the hydrogen storage tank extrusion gas pipeline (24) is connected to the output end of the extrusion gas tank (3).

3. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in claim 1, characterized in that, A regulating valve (26) is installed on the discharge pipe (5).

4. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in claim 3, characterized in that, The regulating valve (26) is a needle valve, and the regulating valve (26) is connected to the stepper motor (29).

5. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in claim 1, characterized in that, The water-based dual-mode combustion chamber system also includes a liquid water injector (27), the output end of which is located inside the combustion chamber (8), and the input end of which is located inside the cooling cavity (15).

6. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in claim 2, characterized in that, The discharge pipe (5) is connected to a powder flame stabilizer (28) at one end inside the combustion chamber (8).

7. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in any one of claims 1-6, characterized in that, The metal powder fuel is aluminum powder fuel or magnesium powder fuel.

8. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in claim 1, characterized in that, The fluidizing gas pipeline (4) is equipped with a gas flow regulating valve (30).

9. The dual-mode burner based on metal powder fuel and the propulsion system for surface and underwater vehicles as described in claim 1, characterized in that, A shut-off valve (31) is installed on the air outlet pipe (12).

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